Controlling device for gas-generators.



PATENTED MAR. 5, 1907.

' F. DURR. CONTROLLING DEVICE FOR GAS GENERATORS.

APPLICATION FILED MAR. 26 1906.

2 SHEETSSHBET 1.

PATENTED MAR. 5, 1907 P. DURR. CONTROLLING DEVICE FOR GAS GENERATORS.

APPLIUATION FILED MAR. 26, 1906.

2 SHEETS'SHBET 2.

Hal-E :5:

UNITED STATES FRITZ DURR, or KARLSRUHE, GERMANY.

V CONTROLLING DEVICE FOR GAS-GENERATORS.

Specification of Letters Patent.

Patented March 5,1907.

Application filed March 26, 1906. Serial No. 308,149.

To all whom it mag concern.-

Be it known that I, FnITz DI'iRR, a citizen of the German Empire, and a resident of Karlsruhe, Baden, Germany, have invented certain new and useful Improvements in ontrolling Devices for Gas-Generators, of which the following is a specification.

The invention relates to a device for g-as-. generators which allows of constantly controlling whether the generator supplies a good gas or whether on account of a formation of bad gas an accident is to befeared.

The drawing illustrates a form of construction of the apparatus.

Figure 1 shows a gas-generator with a controlling device, while Fig. 2 shows a vertical section through the controlling device on an enlarged scale. Fig. 3 is a cross-section on'the line A B of Fig. 2.

Similar .numerals refer to similar parts throughout the several views.

The construction of the gas-generator 'is a matter of indifierence. In the drawing it is presumed that in the furnace there are produced three generator-gases, which draw off at the top and bottom through tubes 4 and 5 and pass over into a high-pressure conduit 6 common to both tubes 4 and 5. From this high-pressure conduit 6 branches off a sec ondary conduit, with which a motor 8 of any construction may be connected. In the lat ter the gases produced in the generator-furnace 3 and mixed in the already-known manner with atmospheric air are used as a driving medium.

From the high-pressure conduit 6 branches ofl, according to the present invention, at a suitable place, but before the place where the secondary conduit 7 branches ofi, a conduit 9,,which opens into a chamber 11, inclosed in the mantle or jacket 10. The conduit 9 is provided with a stop-valve or stop-cock 12. At the place where the gas passes out of the conduit 9 into the chamber 11 is rovided a socket 13, with which is connecte atube 14,

open at the bottom and extending down into the lower part of the chamber 1 1. The socket 13 is durin the working of the generator constantly is with high-pressure water from a tube 15, which, passing out in a fine spray, sucks up gas out of the conduit 9 and presses it through the tube 14 into the chamber 11.

In the chamber there is in consequence of this always a certain overpressure. The stop-valvev 16 serves to regulate and stop the water-supply. At the bottom of the chamber'll is screwed into the mantle or jacket a tube 17, bent to form a siphon, Whose outlet 18 may be arranged above an escape-pipe 20, provided with a funnel-shaped widening 19. Through this conduit 17 20 constantly flows off the water coming out of the socket 13.

To the upper part of the chamber 11 is connected a pipe 21, which may also have a stop-cock 22 and terminates in an incandescent gas-light burner 23. A burner of any known construction-for instance, an Auer burnermay be used. The drawingshows at 24 the incandescent mantle, which is surrounded by a transparent chimneyfer instance, a glass chimney 26held by the crown of the burner 25. I

The fluctuations inthe pressure of the gas in the main conduit 6 on the motor 8 beginning to suck are scarcely noticeable in the'chamher 1 1, as the latter is verylarge, but the entry of the gas at the socket 13 very small. The quality of the gas can for this reason be easily and reliably recognized on the incandescent mantle 24 of the incandescent burner. If the gas produces a poor light, the person attending to the generator 3 can at once go and see whether a bad combustible, open doors, too much or too little steam is the cause of it, and do at once the necessary to remedy the defectbefore it can exert any influence on the running of the motor 8.

The chamber 11 for equalizing the pressure in the conduit 9 21 can also be used for producing an audible signal in consequence of the variations in the temperatures according to the quality of the gases. To this end is provided above the burner 23 a chimney 27,

' which encompasses a metal bar 28. At the bottom and at the top there is inserted into the chimney 27 a cross-piece 29 and 30, Figs. 2 and 3. the metal bar 28 or inserted into it in any other suitable way, while the cross-piece 30 has an openingin the center through which the metal bar passes without touching it. At the under side the cross-piece 29 has an annular groove, into which enters the chimney 26 of the incandescent burner. The chimney 27 is on the inside lined with a layer 31 of insulating material-for instance, asbestos.

The chimney 27 has a support 32, in which there is journaled at 33 a lever-arm 34, so that it can freely move. The lever-arm'34 is so arranged that it passes over the metal bar 28. At al suitable place there is connected with the arm 34 one of the poles 35 of an.

Into the cross-piece 29 is screwed electric lead 36, Fig. 1, into which is inserted an electric bell 37 The other pole 38 of the lead 36 actuates a lever-arm 39, journaled at 40 in a trestle 41 on the chimney 27. One of the polesfor instance, 35-is insulatedly fastened to its arm 34, so that the two arms 34 and 39 form the two parts of a movable contact.

As long as the combustion temperature of the gases coming from the burner 23 remains at or above a certain height the gases heat the bar 28 in a manner that it, in consequence of its expansion, touches the lever-arm 34 and raises the same, and thus keeps open the contact 34 39. If, however, the gas is worse than what it ought to be for a normal working of the motor, the combustion temperature sinks so much that it is no longer great enough to expand the bar 28 to the extent required for keeping open the contact 34 39. The contact closes and the bell 37, intercalated into the electric lead 36 commences to ring. I Into the one or the other contact-lever 34 or 39 there may be screwed an adjustingscrew 42 for the purpose of regulatingthe mo ment when the contact is to beclosed.

When the controlling device is connected or started, and likewise when it is disconnected, it is necessary to prevent a non-desired ringing of the bell. To this end one of the arms 39 of the contact 34 39 may constitute a double lever, which, for instance, may stand under the action of a spring 43 and remains.

to secure by United States Letters Patent,

1. A controlling device on gas-generators for recognizing the quality of the gas, consisting of an incandescent light connected with the gas-pipe, a pipe connecting the incandescent light with the gas-pipe, into which there is inserted a chamber provided with means for pressing the gas into the chamber, a metal bar arranged above the incandescent light, and means for transmitting the expansion of the said metal bar to a contact device in circuit with an electric bell, located at any desired point, substantially as set forth.

2. A controlling device on gasgenerators for recognizing the quality of the gas, consisting of an incandescent light connected with the gas-pipe, into which there is inserteda chamber provided at the end where the gas enters with a suction-socket for drawing in the gas, a metal bar arranged above the in candescent light, and means for transmitting the expansion of the said metal bar to a contact device in circuit with an electric bell, lo'

cated at any desired point, substantially as set forth.

3. A controlling device on gas-generators for recognizing the quality of the gas, consisting of an incandescent light connected with the gas-pipe, into which there is inserted a chamber provided at the end where the gas enters with a suction-socket for drawing in the gas, into which opens a pipe for conveying water under pressure into it, a pipe connecting the socket with the lower part of the chamber, a metal bar arranged above the incandescent light, and means for transmitting the expansion of the said metal bar to a contact device in circuit with an electric bell, located at any desired point, substantially as set forth. y

4. "A controlling device on gas-generators for recognizing the quality of the gas, consisting of an incandescent light connected with the gas-pipe, into which there is inserted a chamber provided at the end where the gas enters with a suction-socket for drawing in the gas, into which opens a pipe for conveying water under pressure into it, a pipe connecting the socket with the lower part of the chamber, an outlet ipe, bent to form a siphon, and connecte with the bottom of the chamber, a metal bar arranged above the'in candescent light, and means for transmitting the expansionof the said metal bar to a contact device in circuit with an electric bell, lo-

cated at any desired point, substantiallyas 1:;

and for the purpose set forth.

The foregoing specification signed at Cologne, Germany, this 9th day of February,

FRITZ DURR. In presence of- BEssrE F.DUNLAP, LoUIs VANDORG. 

